API 11B Sucker Rods

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1. Introduction of Sucker rod

The Sucker rods are used to connect subsurface sucker rod pump and pump unite. We hold a international advanced upsetting production line with continuous upsetting in eight station, the rod connector has good forging structure and continuous metal streamline, which has high grain size and no overheating burnt, crack, pit, folding and other defects. Besides, it has good advantages of high accuracy forming, high liner degree, uniform organization performance, good corrosion resistance and stress rupture ability, which can preferably solve the problems of losing and unscrewing.

2. Manufacturing specification: API 11B

3. Material

3.1. Chemical Composition

The chemical composition of steel sucker rods and steel pony rods shall be any composition of AISI series steel , or equivalent ,listed in Table which can be effectively heat treated to the mechanical requirements of grades K.C. and D rods

Chemical Composition of Steel Sucker Rods

Grade

Chemical composition

K

AISI 46XX series steel a

C

AISI 10XX series steel a

AISI 15XX series steel a

D carbon

AISI 10XX series steel a

AISI 15XX series steel a

D alloy

AISI 41XX series steel a

D special

Special alloy shall be any chemical composition that contains a combination of nickel, chromium , and molybdenum that total a minimum of 1.15% alloying content.

Or an equivalent in international series number steel.

3.2. Mechanical Properties

Mechanical Properties of Steel Rods and Pony Rods

Grade

Minimum Yield (0.2% offset)

Minimum Tensile

Maximum Tensile

psi

MPa

psi

MPa

psi

MPa

K

60,000

414

90,000

621

115,000

793

C

60,000

414

90,000

621

115,000

793

D

85,000

586

115,000

793

140,000

965

3. Specification

Size

Rod Body

Nominal

Thread

(in)

Connector O.D.

Length

Dia

Tolerance  (mm)

Connector

Coupling

Slim Hole

Sucker Rod

Pony rod

(mm)

(in)

(mm)

(in)

(mm)

(in)

(mm)

(in)

(mm)

(in)

(mm)

(in)

5/8in

15.88

0.625

≤0.30

1-5/16

31.75

1.250

38.10

1.500

31.8

1.250

7620

—10000

25

32.81

600

1000

1500

2000

2500

3000

3500

1.97

3.28

4.92

6.56

8.20

9.84

11.48

3/4in

19.05

0.750

1-1/16

38.10

1.500

41.28

1.625

38.1

1.500

7/8in

22.23

0.875

1-3/16

41.28

1.625

46.0

1.812

41.3

1.625

1in

25.40

1.0

1-3/8

50.80

2.000

55.6

2.187

50.8

2.000

1-1/8in

28.58

1.125

1-9/16

57.15

2.250

60.33

2.375


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